Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9829356 | Journal of Crystal Growth | 2005 | 9 Pages |
Abstract
The effect of the addition of Li or Ca to Ga-Na melt on the promotion of nitrogen dissolution was examined quantitatively in the growth of GaN single crystals using the sodium flux method. The addition of Li or Ca to Ga-Na melt increased both the solubility of solid GaN and that of gaseous nitrogen against the solution. The increase in the solubility of gaseous nitrogen seems to be caused by additives having a high binding energy with nitrogen. We measured the solubility of GaN and that of gaseous nitrogen against Ga-Na, Ga-Na-Li and Ga-Na-Ca melt in this study. On the basis of these data, we clarified the relationship between the N/Ga ratio in the solution and the coloration of GaN crystals grown in each system, and between changes in the yield of GaN and the absolute value of supersaturation.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Masanori Morishita, Fumio Kawamura, Minoru Kawahara, Masashi Yoshimura, Yusuke Mori, Takatomo Sasaki,